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Appeared on: Friday, January 28, 2011
Netflix Reports Performance on U.S. ISP Networks

In the company blog Thursday, Netflix Director of Content Delivery
Ken Florence presented a ranking of the best and worst network
operators for Netflix streaming, a ranking that the company plans to
maintain and publish as a monthly report.

In the post, written by Ken Florance, Netflix's director of content
delivery, Florance explains that the company has compiled data on how
well ISPs are best able to sustain high-capacity throughput.

Currently, Netflix' top HD streams are about 4800 kilobits per
second. Although Netflix users is able to sustain play at that rate
due to throughput constraints, the greater the throughput the user
can achieve, and the greater the image quality over the duration of
the play.

"As we use a number of CDNs, and our clients can adapt to changing
network conditions by selecting the network path that's currently
giving them the best throughput, Netflix streaming performance ends
up being an interesting way to measure sustained throughput available
from a given ISP over time, and therefore the quality of Netflix
streaming that ISP is providing to our subscribers," Florance said.